/*
 * Copyright (c) 2022, yifengling0. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. No personal names or organizations' names associated with the
 *    Atomthreads project may be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "atom.h"
#define ATOM_NONE_STANDARDIO
#include "drv_e2p.h"
#undef OK
#include <Arduino.h>
#include <EEPROM.h>
#include "debug.h"
#include "syslog.h"

int esp32_e2p_ioctl(FD fd, int function, void* arg)
{
    E2pDataBlock *block = (E2pDataBlock*)arg;
    int result = 0;

    switch (function & E2P_MASK)
    {
    case E2P_READ:
        result = (int)EEPROM.readBytes(block->addr, block->buffer, block->size);
        break;
    case E2P_WRITE:
        result = (int)EEPROM.writeBytes(block->addr, block->buffer, block->size);
        if( function & E2P_COMMIT){
            EEPROM.commit();
        }
        break;
    default:
        SYSLOG(LOG_ERR, "e2prom ioctl error with addr %d, fun %d", block->addr, function);
        break;
    }

    if( result != block->size){
        SYSLOG(LOG_ERR, "e2prom wrong size! %d", block->size);
        return ATOM_ERROR;
    }else{
        return ATOM_OK;
    }
}

static E2pOps _ops = {
    esp32_e2p_ioctl
};

static Esp32EEPROM _e2p;

void Esp32E2promCreate(int size)
{
    _e2p.super.Protected.size = size;
    EEPROM.begin(_e2p.super.Protected.size);
    E2PCreate(&_e2p.super, BSP_E2P_NAME, &_ops);
    SYSLOG(LOG_INFO, "e2prom module initlized");
}